Static mixing neutralization device for sodium benzoate production

Abstract

The utility model relates to the technical field of chemical production discloses a static mixing neutralization device for sodium benzoate production, including static mixing pipe, both sides of static mixing pipe are fixedly connected with connecting plate no.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, and in particular to a static mixing and neutralization device for the production of sodium benzoate. Background Technology

[0002] Sodium benzoate, a commonly used food preservative, is widely used in various industries such as food, pharmaceuticals, dyes, and plastics. In food, it prevents spoilage and extends shelf life; in the pharmaceutical industry, it is used as a bactericide; in the dye industry, it acts as a mordant; in the plastics industry, it serves as a plasticizer; and it can also be used as an intermediate in the synthesis of fragrances and other organic compounds. With the ever-increasing demand for sodium benzoate from various industries, the requirements for its production efficiency and quality are becoming increasingly stringent, especially in the neutralization reaction stage. Traditional production methods have revealed many shortcomings in terms of mixing efficiency and reaction uniformity. An innovative production equipment is needed to optimize the sodium benzoate production process. Against this backdrop, a static mixing and neutralization device for sodium benzoate production has emerged.

[0003] In the production of sodium benzoate, storage tanks, static mixing mechanisms, neutralization kettles, and pH meters are key supporting equipment in the static mixing and neutralization unit. The storage tanks, cylindrical containers made of corrosion-resistant metal, store raw materials and transport them to the static mixing mechanism via pipelines. The static mixing mechanism, also in the form of a pipe, features a unique internal structure of separators, baffles, and partitions that divides the material into multiple streams, achieving rapid and uniform mixing and initial neutralization. The neutralization kettle, a large cylindrical container, receives the mixed materials and, through a stirring device, further promotes mixing and completes the neutralization reaction, producing sodium benzoate. The pH meter, with electrodes and a display, monitors the acidity and alkalinity of the material, assisting in precise control of the production process and ensuring product quality.

[0004] In the static mixing and neutralization device used for sodium benzoate production, the separators, baffles, and partitions inside the static mixing tube are prone to corrosion during the long-term mixing process of benzoic acid and sodium hydroxide, and the replacement of these components is cumbersome. At the same time, the traditional neutralization device is not very effective in generating sodium benzoate, especially at room temperature, where the reaction mixing efficiency of benzoic acid and sodium hydroxide is low, making it difficult to meet the requirements of high-efficiency production. Therefore, a static mixing and neutralization device for sodium benzoate production is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a static mixing and neutralization device for sodium benzoate production, aiming to improve the problems of cumbersome components in the static mixing tube and low mixing efficiency of sodium hydroxide reaction in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A static mixing and neutralization device for sodium benzoate production includes a static mixing tube. A connecting plate is fixedly connected to both the upper and lower parts of the static mixing tube. A rubber ring is fixedly connected to one end of the connecting plate, and a connecting plate is abutted against one end of the rubber ring. Multiple evenly distributed threaded rods are threadedly connected to the inner side of the connecting plate. Nuts are fixedly connected to the upper part of each threaded rod, and nuts are threadedly connected to the bottom of each threaded rod. Multiple evenly distributed baffles, multiple evenly distributed partitions, and multiple evenly distributed separators are fixedly connected to the inside of the static mixing tube. A groove is formed at one end of the connecting plate. As a further description of the above technical solution: A feed pipe is fixedly connected to one end of the connecting plate 2, a barrel is fixedly connected to the bottom of the connecting plate 2, a rotating rod is rotatably connected to the bottom of the barrel, a plurality of evenly distributed stirring blades are fixedly connected to the outer periphery of the rotating rod, and a heating wire is fixedly connected inside the rotating rod. As a further description of the above technical solution: A benzoic acid tube is fixedly connected to the top of the feed pipe, and a sodium hydroxide tube is fixedly connected to the top of the feed pipe. As a further description of the above technical solution: A base is fixedly connected to the bottom of the barrel, and a drain pipe is fixedly connected to the right side of the barrel. As a further description of the above technical solution: The threaded rod is threadedly connected to the inner side of the first connecting plate, and the first connecting plate abuts against the bottom of the second connecting plate; As a further description of the above technical solution: The rotating rod is rotatably connected to the top of the motor; As a further description of the above technical solution: The partition is fixedly connected to the inner side of the partition, the separator is fixedly connected to the inner side of the partition, and the separator is fixedly connected to the inner side of the baffle. As a further description of the above technical solution: The motor is fixedly connected to the inside of the base.

[0007] This utility model has the following beneficial effects: 1. In this utility model, the static mixing tube can be directly removed by unscrewing the nut on the threaded rod. When replacing, align the rubber rings on the connecting plates on both sides of the new static mixing tube with the groove and press them together to ensure that the connecting plates are precisely aligned. Then, use the threaded rod to pass through the two and thread them together. Finally, tighten the nut to complete the fixation. The operation is convenient and efficient, thereby eliminating the cumbersome process of replacing the components inside the static mixing tube.

[0008] 2. In this invention, a motor drives a rotating rod to rotate, which in turn drives the stirring blades to thoroughly stir the benzoic acid and sodium hydroxide solution. Simultaneously, a heating wire inside the rotating rod generates heat through the motor, heating the materials inside the container. As the temperature rises, molecular motion intensifies, and the chemical reaction activity increases, thereby significantly improving the mixing effect and reaction efficiency, thus solving the problem of low mixing efficiency in the sodium hydroxide reaction. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of a static mixing and neutralization device for the production of sodium benzoate according to the present invention; Figure 2 This is a schematic diagram of the static mixing tube of a static mixing and neutralization device for sodium benzoate production proposed in this utility model; Figure 3 This is a schematic diagram of the connecting plate of a static mixing and neutralization device for sodium benzoate production proposed in this utility model; Figure 4 This is a schematic diagram of the rotating rod of a static mixing and neutralization device for sodium benzoate production proposed in this utility model; Figure 5 This is a schematic diagram of the motor structure of a static mixing and neutralization device for sodium benzoate production proposed in this utility model.

[0010] Legend: 1. Barrel body; 2. Motor; 3. Base; 4. Rotating rod; 5. Heating wire; 6. Stirring blade; 7. Drain pipe; 8. Feed pipe; 9. Static mixing pipe; 10. Separator; 11. Baffle; 12. Partition; 13. Connecting plate one; 14. Connecting plate two; 15. Groove; 16. Rubber ring; 17. Threaded rod; 18. Nut; 19. Nut; 20. Benzoic acid tube; 21. Sodium hydroxide tube. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Reference Figure 1 and Figure 2 and Figure 3This utility model provides an embodiment of a static mixing and neutralization device for sodium benzoate production, comprising a static mixing tube 9, with connecting plates 13 fixedly connected to both the upper and lower parts of the static mixing tube 9. A rubber ring 16 is fixedly connected to one end of the connecting plate 13, and a connecting plate 14 abuts against one end of the rubber ring 16. Multiple evenly distributed threaded rods 17 are threadedly connected to the inner side of the connecting plate 14. Nuts 18 are fixedly connected to the upper part of the threaded rods 17, and nuts 19 are threadedly connected to the bottom of the threaded rods 17. Multiple evenly distributed baffles 11, multiple evenly distributed partitions 12, and multiple evenly distributed separators 10 are fixedly connected to the inside of the static mixing tube 9. A groove 15 is opened at one end of the connecting plate 14. The static mixing tube 9 is connected to the connecting plate 14 through the connecting plates 13 fixedly connected to the upper and lower parts. The rubber ring 16 fixed on the connecting plate 13 provides a seal. The static mixing tube 9 is connected to the connecting plate 13. Multiple evenly distributed threaded rods 17 on the inner side of the connecting plate 13 pass through the connecting plate 14 and are tightened by the nut 18 at the top and the nut 19 at the bottom to ensure a tight connection. At the same time, multiple evenly distributed baffles 11, partitions 12 and separators 10 inside the static mixing tube 9 cooperate with the external connection structure to not only enhance the overall structural strength of the static mixing tube 9, but also play their respective roles in the fluid mixing process. The groove 15 opened at one end of the connecting plate 14 may provide space for the installation of other components or special flow paths of the fluid, so that the function of the static mixing tube 9 can be better realized. The threaded rods 17 are threaded to the inner side of the connecting plate 13, the connecting plate 13 abuts against the bottom of the connecting plate 14, the partitions 12 are fixedly connected to the inner side of the partitions 13, the separators 10 are fixedly connected to the inner side of the partitions 12, and the separators 10 are fixedly connected to the inner side of the baffles 11.

[0013] Reference Figure 1 and Figure 4 and Figure 5One end of the connecting plate 14 is fixedly connected to a feed pipe 8, and the bottom of the connecting plate 14 is fixedly connected to a barrel 1. A rotating rod 4 is rotatably connected to the bottom of the barrel 1, and multiple evenly distributed stirring blades 6 are fixedly connected to the outer periphery of the rotating rod 4. A heating wire 5 is fixedly connected inside the rotating rod 4. The connecting plate 14 not only introduces materials into the system through the feed pipe 8 fixedly connected at one end, but the barrel 1 fixedly connected at its bottom also serves as a material receiving space, forming a coherent system for material transfer and processing with the static mixing pipe 9. The rotating rod 4 rotatably connected to the bottom of the barrel 1 drives the evenly distributed stirring blades 6 to rotate under the drive of the motor 2, etc., to achieve stirring and mixing of the materials in the barrel 1. The heating wire 5 fixedly connected inside the rotating rod 4 can heat the materials, which helps to improve the flowability of the materials and promote the reaction. These components cooperate with each other, so that the entire device forms a complete and efficient process from material input, mixing to processing, which meets specific process requirements. The feed pipe 8 is fixedly connected to a benzoic acid pipe 20 and a sodium hydroxide pipe 21. As an important channel for material transfer, the feed pipe 8, with its fixedly connected benzoic acid pipe 20 and sodium hydroxide pipe 21, respectively supplies benzoic acid and sodium hydroxide to the system, allowing them to initially merge in the feed pipe 8. Then, it enters the static mixing pipe 9, where it is further fully mixed by the action of the internal baffles 11, partitions 12, and separators 10. The mixed material then enters the barrel 1, where it is stirred by the rotating rod 4 and heated by the heating wire 5, achieving efficient reaction. All components work closely together to ensure the continuous and orderly reaction of benzoic acid and sodium hydroxide from feeding and mixing to achieving the expected process goals. The bottom of the barrel 1 is fixedly connected to a base 3, and the right side of the barrel 1 is fixedly connected to a drain pipe 7. The rotating rod 4 is rotatably connected to the top of the motor 2, and the motor 2 is fixedly connected to the inside of the base 3.

[0014] Working Principle: Benzoic acid and sodium hydroxide are introduced into the static mixing tube 9 through the benzoic acid tube 20 and sodium hydroxide tube 21, respectively. Static mixing is then achieved through the synergistic action of the separator 10, baffle 11, and partition 12. The separator 10 divides the tube space into multiple fine channels, forcing the two materials to flow separately and cross paths, significantly increasing the contact area and laying a solid foundation for thorough mixing in the subsequent neutralization reaction. This allows the raw materials to achieve initial and uniform fusion before entering the deep mixing stage. The separator 10 divides the space within the static mixing tube 9 into multiple fine channels, forcing benzoic acid and sodium hydroxide to flow separately and cross paths multiple times after entering the tube. This method significantly increases the contact area between the two materials, allowing them to interact more fully, creating favorable conditions for the neutralization reaction, and improving the mixing efficiency and initial reaction state. The baffle 11 acts as an obstacle to the flowing materials within the static mixing tube 9. When the materials collide with the baffle 11, the flow direction changes, generating a strong turbulent effect. Turbulence can break the relatively stable flow state of materials, allowing materials at different positions and flow rates to mix fully, further enhancing the mass transfer process between materials and promoting the rapid progress of neutralization reaction. The function of the baffle 12 is to divide the interior of the static mixing tube 9 into layers, so that materials at different layers have their own flow paths during the flow process, and can also permeate and mix with each other between layers. This effectively avoids the problem of uneven mixing caused by differences in material flow rate, ensuring that benzoic acid and sodium hydroxide are evenly distributed and fully contacted throughout the entire pipe cross-section, guaranteeing the comprehensiveness and stability of the neutralization reaction, and improving the production quality of sodium benzoate. After the benzoic acid and sodium hydroxide are mixed, they enter the tank 1. In order to improve the mixing degree, the stirring blade 6 in the tank 1 stirs it thoroughly, and the heating wire 5 dissipates heat. In the static mixing and neutralization device used for sodium benzoate production, the heating wire 5 in the rotating rod 4 heats the solution, which can accelerate the molecular movement of benzoic acid and sodium hydroxide solution, promote the neutralization reaction and improve efficiency; it can also reduce the viscosity of the system, facilitate stirring and mixing, reduce sodium benzoate crystallization, and ensure product purity and production continuity. After the sodium benzoate production is completed, it is discharged from the drain pipe 7.

[0015] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A static mixing neutralization device for sodium benzoate production, comprising a static mixing pipe (9), characterized in that: The static mixing tube (9) is fixedly connected to both the upper and lower parts by a connecting plate one (13). A rubber ring (16) is fixedly connected to one end of the connecting plate one (13). A connecting plate two (14) is abutted to one end of the rubber ring (16). Multiple evenly distributed threaded rods (17) are threadedly connected to the inner side of the connecting plate two (14). A nut (18) is fixedly connected to the upper part of the threaded rod (17). A nut (19) is threadedly connected to the bottom of the threaded rod (17). Multiple evenly distributed baffles (11) are fixedly connected inside the static mixing tube (9). Multiple evenly distributed partitions (12) are fixedly connected inside the static mixing tube (9). Multiple evenly distributed separators (10) are fixedly connected inside the static mixing tube (9). A groove (15) is opened at one end of the connecting plate two (14).

2. The static mixing and neutralization apparatus for sodium benzoate production according to claim 1, characterized in that: One end of the connecting plate 2 (14) is fixedly connected to a feed pipe (8), the bottom of the connecting plate 2 (14) is fixedly connected to a barrel body (1), the bottom of the barrel body (1) is rotatably connected to a rotating rod (4), the outer periphery of the rotating rod (4) is fixedly connected to multiple evenly distributed stirring blades (6), and the inside of the rotating rod (4) is fixedly connected to a heating wire (5).

3. The static mixing and neutralization apparatus for sodium benzoate production according to claim 2, characterized in that: The top of the feed pipe (8) is fixedly connected to a benzoic acid pipe (20), and the top of the feed pipe (8) is fixedly connected to a sodium hydroxide pipe (21).

4. A static mixing and neutralization apparatus for sodium benzoate production according to claim 2, characterized in that: The bottom of the barrel (1) is fixedly connected to a base (3), and the right side of the barrel (1) is fixedly connected to a drain pipe (7).

5. A static mixing and neutralization apparatus for sodium benzoate production according to claim 1, characterized in that: The threaded rod (17) is threadedly connected to the inner side of the connecting plate one (13), and the connecting plate one (13) abuts against the bottom of the connecting plate two (14).

6. A static mixing and neutralization apparatus for sodium benzoate production according to claim 2, characterized in that: The rotating rod (4) is rotatably connected to the top of the motor (2).

7. A static mixing and neutralization apparatus for sodium benzoate production according to claim 1, characterized in that: The partition (12) is fixedly connected to the inner side of the partition (12), the partition piece (10) is fixedly connected to the inner side of the partition (12), and the partition piece (10) is fixedly connected to the inner side of the baffle (11).

8. A static mixing and neutralization apparatus for sodium benzoate production according to claim 6, characterized in that: The motor (2) is fixedly connected to the inside of the base (3).

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